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(parent: 972ec35) | patch
watchdog: rc32434_wdt: fix ioctl error handling
authorMichael S. Tsirkin <mst@redhat.com>
Sun, 28 Feb 2016 15:44:09 +0000 (17:44 +0200)
committerWim Van Sebroeck <wim@iguana.be>
Tue, 1 Mar 2016 14:29:42 +0000 (15:29 +0100)
commit10e7ac22cdd4d211cef99afcb9371b70cb175be6
treebf9e63aa2829e06b7ac29d125d7db8712ae850fdtree | snapshot
parent972ec3510330c9d639c0dd72960e9aa02915855ccommit | diff
watchdog: rc32434_wdt: fix ioctl error handling

Calling return copy_to_user(...) in an ioctl will not do the right thing
if there's a pagefault: copy_to_user returns the number of bytes not
copied in this case.

Fix up watchdog/rc32434_wdt to do
return copy_to_user(...)) ?  -EFAULT : 0;

instead.

Cc: stable@vger.kernel.org
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
drivers/watchdog/rc32434_wdt.c diff | blob | history
Domain: System / Kernel;